#footer{  background-color: #f2f2f2; }
#footer ul li{  padding-top: 36px; padding-bottom: 4px; background: url() no-repeat center 2px; background-size: auto 30px; text-align: center; }
#footer ul li.active{ color: #6ab494; }
#footer ul li:nth-child(1){ background-image: url(./image/bottombtn0101.png); }
#footer ul li:nth-child(2){ background-image: url(./image/bottombtn0201.png); }
#footer ul li:nth-child(3){ background-image: url(./image/bottombtn0301.png); }
#footer ul li:nth-child(4){ background-image: url(./image/bottombtn0401.png); }
#footer ul li:nth-child(1).active{ background-image: url(./image/bottombtn0102.png); }
#footer ul li:nth-child(2).active{ background-image: url(./image/bottombtn0202.png); }
#footer ul li:nth-child(3).active{ background-image: url(./image/bottombtn0302.png); }
#footer ul li:nth-child(4).active{ background-image: url(./image/bottombtn0402.png); }
